171127992 has 48 divisors (see below), whose sum is σ = 497671560. Its totient is φ = 48893376.

The previous prime is 171127969. The next prime is 171128017. The reversal of 171127992 is 299721171.

It is a self number, because there is not a number n which added to its sum of digits gives 171127992.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71583 + ... + 73934.

Almost surely, 2^171127992 is an apocalyptic number.

171127992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

171127992 is an abundant number, since it is smaller than the sum of its proper divisors (326543568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171127992 is a wasteful number, since it uses less digits than its factorization.

171127992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145540 (or 145529 counting only the distinct ones).

The product of its digits is 15876, while the sum is 39.

The square root of 171127992 is about 13081.5898116399. The cubic root of 171127992 is about 555.1883590840.

The spelling of 171127992 in words is "one hundred seventy-one million, one hundred twenty-seven thousand, nine hundred ninety-two".